Rolling bearing with single-side sealing structure

Abstract

The utility model discloses a rolling bearing with a unilateral sealing structure, which comprises an inner ring, an outer ring and a roller, a first sealing element is arranged between the inner ring and the outer ring and corresponds to one side of the roller, a second sealing element is arranged on the inner peripheral wall of the outer ring and on the same side of the first sealing element, a groove is annularly arranged on the outer peripheral wall of the inner ring, and the groove is communicated with the first sealing element. One end of the first sealing piece is in sealing connection with the groove, the other end of the first sealing piece is in sealing connection with the inner circumferential wall of the outer ring, the second sealing piece is provided with a sealing end, a notch is formed between the inner circumferential wall of the outer ring and the side wall of the outer ring, and the sealing end is partially embedded in the notch and is in sealing connection with the notch. The structure is simple and the sealing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a rolling bearing with a single-side sealing structure. Background Technique

[0002] Rolling bearings are a common type among many bearing types. Among rolling bearings, rolling bearings with a sealed rolling structure are relatively common. They can be applied to different working environments and have good sealing effects. Existing sealed structure rolling bearings generally adopt double-side sealing. Such double-side sealing structure bearings generally adopt a double-side single-layer sealing structure, that is, a layer of sealing structure is respectively arranged on the two sides of the bearing to meet the sealing requirements. The assembly process of the bearing is cumbersome, and the manufacturing cost is high. The double-side sealing structure is more difficult to assemble, and it is easier to cause bumps to the bearing during assembly, affecting the service life of the bearing. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a rolling bearing with a single-side sealing structure. This rolling bearing with a single-side sealing structure is convenient to assemble, has a simple structure, and has a good sealing effect.

[0004] To achieve the above object, the utility model provides a rolling bearing with a single-side sealing structure, which includes an inner ring, an outer ring and rollers. A first seal is arranged between the inner ring and the outer ring corresponding to one side of the rollers. A second seal is arranged on the inner peripheral wall of the outer ring on the same side as the first seal. A groove is circumferentially formed on the outer peripheral wall of the inner ring. One end of the first seal is sealingly connected to the groove, and the other end is sealingly connected to the inner peripheral wall of the outer ring. The second seal has a sealing end. A notch is arranged between the inner peripheral wall of the outer ring and the side wall of the outer ring. The sealing end is partially embedded in the notch and is sealingly connected to the notch.

[0005] The effects that can be produced by adopting the above technical solutions are as follows: By arranging a first seal between the inner ring and the outer ring and arranging a second seal on the outer ring, the double-layer seals can more effectively prevent dust, moisture and other pollutants from entering the bearing interior, thereby improving the reliability and service life of the bearing. By forming a groove on the outer peripheral wall of the inner ring, the first seal can be sealingly connected to the groove. The groove can fix the first seal while achieving a sealing effect, and the groove can reduce the weight of the bearing itself and lower the manufacturing cost. By arranging the second sealing end and the notch on the side wall of the outer ring, the notch on the side wall of the outer ring can reduce the weight of the outer ring, and by connecting the notch and the second seal, the side wall of the notch can limit the second seal, improving the connection stability. It is convenient to assemble and has a simple structure.

[0006] The utility model is further arranged as follows: A sealing gasket is arranged between the sealing end and the notch, and the thickness of the sealing gasket is 0.1mm - 0.4mm.

[0007] The effects that can be achieved by adopting the above technical solution are as follows: By setting the gasket, the sealing effect between the sealing end and the notch can be enhanced. Moreover, using a gasket with a thickness of 0.1 mm - 0.4 mm enables the gasket to withstand a certain pressure, is not easily damaged, and can have a shock-absorbing effect.

[0008] The present utility model is further configured as follows: The second seal further has an extension end, which is L-shaped with the sealing end. The extension end is arranged parallel to the inner ring side wall, and a gap is formed between the extension end and the inner ring side wall.

[0009] The effects that can be achieved by adopting the above technical solution are as follows: By setting the extension end and the sealing end to be L-shaped, the second seal can seal while the longer end of the L-shape, i.e., the extension end in this solution, can protect the inner ring of the bearing and also prevent dust from entering the bearing interior from the inner ring. The sealing range is more comprehensive and the sealing effect is better.

[0010] The present utility model is further configured as follows: A protective pad is arranged at the position of the extension end corresponding to the inner ring side wall, and a part of the protective pad is accommodated in the gap.

[0011] The effects that can be achieved by adopting the above technical solution are as follows: By arranging the protective pad at the extension end, it can prevent the extension end from expanding and rubbing against the inner ring of the bearing when installed and under pressure, avoiding affecting the bearing, and having a good protective effect.

[0012] The present utility model is further configured as follows: A first magnetic block is arranged on one side of the inner ring corresponding to the extension end, and a second magnetic block that magnetically cooperates with the magnetic block on the inner ring is arranged at the extension end.

[0013] The effects that can be achieved by adopting the above technical solution are as follows: By arranging the first magnetic block and the second magnetic block, the two magnetic blocks can magnetically cooperate with each other. After the second seal is installed, the two magnetic blocks can magnetically attract each other to prevent the second seal from deviating from its position due to the vibration during the operation of the bearing. The positioning effect is good and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a cross-sectional view of an embodiment of the present utility model;

[0015] Figure 2 is a cross-sectional view of the second seal of an embodiment of the present utility model;

[0016] Figure 3 is a partially enlarged cross-sectional view of an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The implementation example of a rolling bearing with a single-side sealing structure according to the present utility model is shown in the figure. The present utility model provides a rolling bearing with a single-side sealing structure, which includes an inner ring 1, an outer ring 2 and rollers 3. A first seal 4 is arranged between the inner ring 1 and the outer ring 2 corresponding to one side of the rollers 3. A second seal 5 is arranged on the inner peripheral wall of the outer ring 2 on the same side as the first seal 4. A groove 11 is circumferentially formed on the outer peripheral wall of the inner ring 1. One end of the first seal 4 is sealingly connected to the groove 11, and the other end is sealingly connected to the inner peripheral wall of the outer ring 2. The second seal 5 has a sealing end 51. A notch 21 is arranged between the inner peripheral wall of the outer ring 2 and the side wall of the outer ring 2. The sealing end 51 is partially embedded in the notch 21 and is sealingly connected to the notch 21. By arranging the first seal 4 between the inner ring 1 and the outer ring 2 and arranging the second seal 5 on the outer ring 2, the double-layer seals can more effectively prevent dust, moisture and other pollutants from entering the bearing interior, thereby improving the reliability and service life of the bearing. By forming the groove 11 on the outer peripheral wall of the inner ring 1, the first seal 4 can be sealingly connected to the groove 11. The groove 11 can fix the first seal 4 and achieve a sealing effect at the same time, and the groove 11 can reduce the weight of the bearing itself and lower the manufacturing cost. By arranging the second sealing end 51 and the notch 21 on the side wall of the outer ring 2, the notch 21 on the side wall of the outer ring 2 can reduce the weight of the outer ring 2, and by connecting the notch 21 and the second seal 5, the side wall of the notch 21 can limit the second seal 5, improving the connection stability, being convenient for assembly and having a simple structure. In the prior art, seals are generally arranged at both ends of the rolling bearing. When such a rolling bearing is in use, dust is relatively easy to enter from one side. Therefore, the cost of arranging seals on both sides in the traditional way is relatively high, and the sealing effect will not be significantly improved. In this solution, by arranging the first seal 4 and the second seal, both seals are arranged on the side of the bearing where it is easier for dust to enter the bearing, and a double-layer seal is arranged on the same side. When assembling the bearing, first place the outer ring 2 on the assembly station, then install the first seal 4 in the inner ring 1. After that, assemble the rollers 3 on the outer ring 2 and then put the inner ring 1 on, so that the rollers 3 can be placed between the inner ring 1 and the outer ring 2. Finally, install the second seal 5. Since the installation step of the second seal 5 is relatively late, arranging a protective pad 54 can prevent damage or scratches to other components of the bearing when installing the second seal 5, thereby affecting the service life of the bearing. A sealing gasket 53 is arranged between the sealing end 51 and the notch 21. The thickness of the sealing gasket 53 is 0.1 mm - 0.4 mm. Arranging the sealing gasket 53 can strengthen the sealing effect between the sealing end 51 and the notch 21, and by using 0.1 mm - 0.The gasket 53 with a thickness of 4 mm enables the gasket 53 to withstand a certain pressure, is not easily damaged, and can have a shock-absorbing effect; the second seal 5 further has an extension end 52, the extension end 52 and the sealing end 51 are in an L shape, the extension end 52 is arranged parallel to the side wall of the inner ring 1, and a gap 55 is formed between the extension end 52 and the side wall of the inner ring 1. Setting the extension end 52 and the sealing end 51 in an L shape enables the second seal 5 to seal, and the longer end of the L shape, that is, the extension end 52 in this solution, can protect the inner ring 1 of the bearing and also prevent dust from entering the bearing interior from the inner ring 1, with a more comprehensive sealing range and better sealing effect; a protective pad 54 is arranged at the position of the extension end 52 corresponding to the side wall of the inner ring 1, and the protective pad 54 is partially accommodated in the gap 55. Arranging the protective pad 54 at the extension end 52 can prevent the extension end 52 from expanding and rubbing against the inner ring 1 of the bearing when installed and pressed, avoiding affecting the bearing and having a good protective effect; a first magnetic block 12 is arranged on one side of the inner ring 1 corresponding to the extension end 52, and a second magnetic block 56 magnetically matched with the magnetic block on the inner ring 1 is arranged on the extension end 52. Arranging the first magnetic block 12 and the second magnetic block 56 enables the two magnetic blocks to be magnetically matched with each other. After the second seal 5 is installed, the two magnetic blocks can be magnetically attracted to each other to prevent the second seal 5 from deviating from its position due to the vibration during the operation of the bearing, with a good positioning effect and a simple structure. In this solution, the first magnetic block 12 and the second magnetic block 56 are respectively a magnetic block and a metal block for being magnetically attracted, and the two can be magnetically matched with each other. The magnetic force generated when the two are magnetically matched can prevent the distance between the extension end 52 and the inner ring 1 from being too large or too small, avoiding affecting the service life of the bearing.

[0018] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A rolling bearing with a single-side sealing structure, comprising an inner ring, an outer ring and a roller, characterized in that: A first seal is arranged on one side of the roller corresponding to the inner ring and the outer ring, a second seal is arranged on the same side of the inner circumferential wall of the outer ring as the first seal, a groove is circumferentially opened on the outer circumferential wall of the inner ring, one end of the first seal is sealed with the groove, and the other end is sealed with the inner circumferential wall of the outer ring, the second seal has a sealing end, a notch is arranged between the inner circumferential wall of the outer ring and the side wall of the outer ring, the sealing end is partially embedded in the notch and sealed with the notch.

2. The rolling bearing with a single-side sealing structure according to claim 1, characterized in that: A sealing gasket is arranged between the sealing end and the notch, and the thickness of the sealing gasket is 0.1mm-0.4mm.

3. The rolling bearing with a single-side sealing structure according to claim 1, characterized in that: The second sealing member further has an extension end, the extension end and the sealing end are L-shaped, the extension end is arranged parallel to the inner ring side wall, and a gap is formed between the extension end and the inner ring side wall.

4. The rolling bearing with a single-side sealing structure according to claim 3, characterized in that: A protective pad is arranged at a position of the extending end corresponding to the inner ring side wall, and the protective pad is partially accommodated in the gap.

5. The rolling bearing with a single-side sealing structure according to claim 1, characterized in that: A first magnetic block is disposed on one side of the inner ring corresponding to the extension end, and a second magnetic block is disposed on the extension end to magnetically cooperate with the magnetic block on the inner ring.

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